Wide bandwidth transceiver

ABSTRACT

The wide bandwidth transceiver includes a receiver section, a transmitter section, and a local oscillation module. The receiver section includes a 1 st  receiver intermediate frequency (IF) stage, a receiver switch module, and a 2 nd  receiver IF stage. The 1 st  receiver IF stage is operably coupled to convert a 1 st  inbound radio frequency (RF) signal into a 1 st  inbound IF signal based on a 1 st  local oscillation of the local oscillation module. The receiver switch module passes either the 1 st  inbound IF signal or a 2 nd  inbound RF signal, which have similar carrier frequencies, to the 2 nd  receiver IF stage. The 2 nd  receiver IF stage receives the selected signal from the receiver switch module and based on a 2 nd  local oscillation converts the selected signal into a low intermediate frequency signal. The transmitter section includes a 1 st  transmitter intermediate frequency (IF) stage, a 2 nd  transmitter IF stage, a power amplifier and a transmitter switch module. The 1 st  transmitter IF stage is operably coupled to convert an outbound low IF signal into a 1 st  outbound radio frequency (RF) signal based on the 2 nd  oscillation. The 2 nd  transmitter IF stage, when operably coupled, converts the 1 st  outbound RF signal into a 2 nd  outbound RF signal based on the 1 st  local oscillation. The transmitter switching module couples either the 1 st  outbound RF signal or the 2 nd  outbound RF signal to the power amplifier.

BACKGROUND OF THE INVENTION

[0001] 1. Technical Field of the Invention

[0002] This invention relates generally to wireless communicationsystems and more particularly to transceivers used within such wirelesscommunication systems.

[0003] 2. Description of Related Art

[0004] Communication systems are known to support wireless and wirelined communications between wireless and/or wire lined communicationdevices. Such communication systems range from national and/orinternational cellular telephone systems to the Internet topoint-to-point in-home wireless networks. Each type of communicationsystem is constructed, and hence operates, in accordance with one ormore communication standards. For instance, wireless communicationsystems may operate in accordance with one or more standards including,but not limited to, IEEE 802.11, Bluetooth, advanced mobile phoneservices (AMPS), digital AMPS, global system for mobile communications(GSM), code division multiple access (CDMA), local multi-pointdistribution systems (LMDS), multi-channel-multi-point distributionsystems (MMDS), and/or variations thereof.

[0005] Depending on the type of wireless communication system, awireless communication device, such as a cellular telephone, two-wayradio, personal digital assistant (PDA), personal computer (PC), laptopcomputer, home entertainment equipment, et cetera communicates directlyor indirectly with other wireless communication devices. For directcommunications (also known as point-to-point communications), theparticipating wireless communication devices tune their receivers andtransmitters to the same channel or channels (e.g., one of the pluralityof radio frequency (RF) carriers of the wireless communication system)and communicate over that channel(s). For indirect wirelesscommunications, each wireless communication device communicates directlywith an associated base station (e.g., for cellular services) and/or anassociated access point (e.g., for an in-home or in-building wirelessnetwork) via an assigned channel. To complete a communication connectionbetween the wireless communication devices, the associated base stationsand/or associated access points communicate with each other directly,via a system controller, via the public switch telephone network, viathe Internet, and/or via some other wide area network.

[0006] For each wireless communication device to participate in wirelesscommunications, it includes a built-in radio transceiver (i.e., receiverand transmitter) or is coupled to an associated radio transceiver (e.g.,a station for in-home and/or in-building wireless communicationnetworks, RF modem, etc.). As is known, the receiver is coupled to theantenna and includes a low noise amplifier, one or more intermediatefrequency stages, a filtering stage, and a data recovery stage. The lownoise amplifier receives inbound RF signals via the antenna andamplifies then. The one or more intermediate frequency stages mix theamplified RF signals with one or more local oscillations to convert theamplified RF signal into baseband signals or intermediate frequency (IF)signals. The filtering stage filters the baseband signals or the IFsignals to attenuate unwanted out of band signals to produce filteredsignals. The data recovery stage recovers raw data from the filteredsignals in accordance with the particular wireless communicationstandard.

[0007] As is also known, the transmitter includes a data modulationstage, one or more intermediate frequency stages, and a power amplifier.The data modulation stage converts raw data into baseband signals inaccordance with a particular wireless communication standard. The one ormore intermediate frequency stages mix the baseband signals with one ormore local oscillations to produce RF signals. The power amplifieramplifies the RF signals prior to transmission via an antenna.

[0008] As is further known, the many standards that govern wirelesscommunication systems provide different operating frequency ranges. Forexample, IEEE802.11a operates in the 5.25 gigahertz and 5.75 gigahertzfrequency ranges, IEEE802.11b and Bluetooth operate in the 2.4 gigahertzfrequency range, and GSM operates in the 900 megahertz frequency range.Accordingly, the analog transmitter and receiver portions (e.g., theportions of a radio that convert between analog baseband signals and RFsignals) are implemented differently for each different frequency rangeof the various standards. As such, if the analog transmitter andreceiver portions are to be implemented on an integrated circuit, anintegrated circuit manufacturer needs to produce separate integratedcircuits for each different standard. Integrated circuit manufacturersare acutely aware of the added costs of developing, manufacturing, andsupporting multiple integrated circuits of related technology.

[0009] Therefore, a need exists for a wide bandwidth transceiver thatoperates over a wide range of frequencies such that a single transceivermay support multiple wireless communication standards.

BRIEF SUMMARY OF THE INVENTION

[0010] The wide bandwidth transceiver of the present inventionsubstantially meets these needs and others. An embodiment of a widebandwidth transceiver includes a receiver section, a transmittersection, and a local oscillation module. The receiver section includes a1^(st) receiver intermediate frequency (IF) stage, a receiver switchmodule, and a 2^(nd) receiver IF stage. The 1^(st) receiver IF stage isoperably coupled to convert a 1^(st) inbound radio frequency (RF) signalinto a 1^(st) inbound IF signal based on a 1^(st) local oscillation ofthe local oscillation module. For example, if the 1^(st) inbound radiofrequency signal has a carrier frequency of 5.25 gigahertz (i.e., inaccordance with IEEE802.11a), the 1^(st) local oscillation 81 may have afrequency of 2.85 gigahertz such that the resulting 1^(st) inbound IFsignal has a carrier frequency of 2.4 gigahertz.

[0011] The receiver switch module passes either the 1^(st) inbound IFsignal or a 2^(nd) inbound RF signal, which have similar carrierfrequencies, to the 2^(nd) receiver IF stage. The 2^(nd) receiver IFstage receives the selected signal from the receiver switch module andbased on a 2^(nd) local oscillation converts the selected signal into alow intermediate frequency signal (e.g., signals having a carrierfrequency from baseband to a few megahertz). Continuing with the aboveexample, if the receiver section is receiving the 1^(st) inbound RFsignal having a carrier frequency of 5.25 gigahertz, the 1^(st) receiverIF stage converts it into an inbound IF signal having a carrierfrequency of 2.4 gigahertz. The receiver switch module passes the 1^(st)inbound IF signal to the 2^(nd) receiver IF section. The 2^(nd) receiverIF stage 104 converts the 1^(st) inbound IF signal into a low IF signalbased on the 2^(nd) local oscillation, which may be 2.4 gigahertz.Alternatively, if the receiver section is receiving the 2^(nd) inboundRF signal, which may have a carrier frequency of 2.4 gigahertz for aBluetooth application or IEEE802.11b application, the receiver switchmodule passes the 2^(nd) inbound RF signal to the 2^(nd) receiver IFstage. Based on the 2.4 gigahertz local oscillation, the 2^(nd) receiverIF stage converts the 2^(nd) inbound RF signal into the low IF signal.

[0012] The transmitter section includes a 1^(st) transmitterintermediate frequency (IF) stage, a 2^(nd) transmitter IF stage, apower amplifier and a transmitter switch module. The 1^(st) transmitterIF stage is operably coupled to convert an outbound low IF signal into a1^(st) outbound radio frequency (RF) signal based on the 2^(nd)oscillation. The 2^(nd) transmitter IF stage, when operably coupled,converts the 1^(st) outbound RF signal into a 2^(nd) outbound RF signalbased on the 1^(st) local oscillation. The transmitter switching modulecouples either the 1^(st) outbound RF signal or the 2^(nd) outbound RFsignal to the power amplifier.

[0013] For example, if the transmitter is to up convert the low IFsignal to a radio frequency signal having a carrier frequency of 5.25gigahertz, the 1^(st) transmitter IF stage up converts the low IFsignal, based on a 2.4 gigahertz 2^(nd) local oscillation, to a 1^(st)outbound RF signal having a carrier frequency of 2.4 gigahertz. Thetransmitter switch module provides the 1^(st) outbound RF signal to the2^(nd) transmitter IF stage. Based on a 1^(st) local oscillation of 2.85gigahertz, the 2^(nd) transmitter IF stage up converts the 1^(st)outbound RF signal, which has a carrier frequency of 2.4 gigahertz, to a2^(nd) outbound RF signal having a carrier frequency of 5.25 gigahertz.The 2^(nd) outbound RF signal is provided to the power amplifier.Alternatively, if the transmitter is to up convert the low IF signal toa radio frequency signal having a carrier frequency of 2.4 gigahertz,the 1^(st) transmitter IF stage up converts the low IF signal based on a2.4 gigahertz 2^(nd) local oscillation to produce the 1^(st) outbound RFsignal, which has a carrier frequency of 2.4 gigahertz. The transmitterswitch module passes the 1^(st) outbound RF signal to the poweramplifier 126, hence by-passing the 2^(nd) transmitter IF stage.

[0014] Additional intermediate frequency stages may be added such thatthe wide bandwidth transceiver may function over multiple wirelesscommunication standards. Accordingly, by having a transmitter sectionand receiver section that can function for various frequency ranges, asingle integrated circuit may be fabricated and be in compliance withmultiple wireless communication standards.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

[0015]FIG. 1 is a schematic block diagram of a wireless communicationsystem in accordance with the present invention;

[0016]FIG. 2 is a schematic block diagram of a wireless communicationdevice in accordance with the present invention;

[0017]FIG. 3 is a schematic block diagram of a receiver section inaccordance with the present invention;

[0018]FIG. 4 is a schematic block diagram of a transmitter section inaccordance with the present invention;

[0019]FIG. 5 is a schematic block diagram of an alternate receiversection in accordance with the present invention;

[0020]FIG. 6 is a schematic block diagram of an alternate transmittersection in accordance with the present invention;

[0021]FIG. 7 is a schematic block diagram of a local oscillation modulein accordance with the present invention;

[0022]FIG. 8 is a schematic block diagram of another embodiment of areceiver section in accordance with the present invention; and

[0023]FIG. 9 is a schematic block diagram of another embodiment of atransmitter section in accordance with the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[0024]FIG. 1 is a schematic block diagram illustrating a communicationsystem 10 that includes a plurality of base stations and/or accesspoints 12-16, a plurality of wireless communication devices 18-32 and anetwork hardware component 34. The wireless communication devices 18-32may be laptop host computers 18 and 26, personal digital assistant hosts20 and 30, personal computer hosts 24 and 32 and/or cellular telephonehosts 22 and 28. The details of the wireless communication devices willbe described in greater detail with reference to FIG. 2.

[0025] The base stations or access points 12-16 are operably coupled tothe network hardware 34 via local area network connections 36, 38 and40. The network hardware 34, which may be a router, switch, bridge,modem, system controller, et cetera provides a wide area networkconnection 42 for the communication system 10. Each of the base stationsor access points 12-16 has an associated antenna or antenna array tocommunicate with the wireless communication devices in its area.Typically, the wireless communication devices register with a particularbase station or access point 12-14 to receive services from thecommunication system 10. For direct connections (i.e., point-to-pointcommunications), wireless communication devices communicate directly viaan allocated channel.

[0026] Typically, base stations are used for cellular telephone systemsand like-type systems, while access points are used for in-home orin-building wireless networks. Regardless of the particular type ofcommunication system, each wireless communication device includes abuilt-in radio and/or is coupled to a radio. The radio includes a highlylinear amplifier and/or programmable multi-stage amplifier as disclosedherein to enhance performance, reduce costs, reduce size, and/or enhancebroadband applications.

[0027]FIG. 2 is a schematic block diagram illustrating a wirelesscommunication device that includes the host device 18-32 and anassociated radio 60. For cellular telephone hosts, the radio 60 is abuilt-in component. For personal digital assistants hosts, laptop hosts,and/or personal computer hosts, the radio 60 may be built-in or anexternally coupled component.

[0028] As illustrated, the host device 18-32 includes a processingmodule 50, memory 52, radio interface 54, input interface 58 and outputinterface 56. The processing module 50 and memory 52 execute thecorresponding instructions that are typically done by the host device.For example, for a cellular telephone host device, the processing module50 performs the corresponding communication functions in accordance witha particular cellular telephone standard.

[0029] The radio interface 54 allows data to be received from and sentto the radio 60. For data received from the radio 60 (e.g., inbounddata), the radio interface 54 provides the data to the processing module50 for further processing and/or routing to the output interface 56. Theoutput interface 56 provides connectivity to an output display devicesuch as a display, monitor, speakers, et cetera such that the receiveddata may be displayed. The radio interface 54 also provides data fromthe processing module 50 to the radio 60. The processing module 50 mayreceive the outbound data from an input device such as a keyboard,keypad, microphone, et cetera via the input interface 58 or generate thedata itself. For data received via the input interface 58, theprocessing module 50 may perform a corresponding host function on thedata and/or route it to the radio 60 via the radio interface 54.

[0030] Radio 60 includes a host interface 62, digital receiverprocessing module 64, an analog-to-digital converter 66, a receiversection 72, a receiver filter module 71, a transmitter/receiver switch73, a local oscillation module 74, memory 75, a digital transmitterprocessing module 76, a digital-to-analog converter 78, a transmittersection 82, a transmitter filter module 85, and an antenna 86. Theantenna 86 may be a single antenna that is shared by the transmit andreceive paths as regulated by the Tx/Rx switch 73, or may includeseparate antennas for the transmit path and receive path. The antennaimplementation will depend on the particular standard to which thewireless communication device is compliant.

[0031] The digital receiver processing module 64 and the digitaltransmitter processing module 76, in combination with operationalinstructions stored in memory 75, execute digital receiver functions anddigital transmitter functions, respectively. The digital receiverfunctions include, but are not limited to, digital intermediatefrequency to baseband conversion, demodulation, constellation demapping,decoding, and/or descrambling. The digital transmitter functionsinclude, but are not limited to, scrambling, encoding, constellationmapping, modulation, and/or digital baseband to IF conversion. Thedigital receiver and transmitter processing modules 64 and 76 may beimplemented using a shared processing device, individual processingdevices, or a plurality of processing devices. Such a processing devicemay be a microprocessor, micro-controller, digital signal processor,microcomputer, central processing unit, field programmable gate array,programmable logic device, state machine, logic circuitry, analogcircuitry, digital circuitry, and/or any device that manipulates signals(analog and/or digital) based on operational instructions. The memory 75may be a single memory device or a plurality of memory devices. Such amemory device may be a read-only memory, random access memory, volatilememory, non-volatile memory, static memory, dynamic memory, flashmemory, and/or any device that stores digital information. Note thatwhen the processing module 64 and/or 76 implements one or more of itsfunctions via a state machine, analog circuitry, digital circuitry,and/or logic circuitry, the memory storing the corresponding operationalinstructions is embedded with the circuitry comprising the statemachine, analog circuitry, digital circuitry, and/or logic circuitry.

[0032] In operation, the radio 60 receives outbound data 94 from thehost device via the host interface 62. The host interface 62 routes theoutbound data 94 to the digital transmitter processing module 76, whichprocesses the outbound data 94 in accordance with a particular wirelesscommunication standard (e.g., IEEE 802.11a, IEEE 802.11b, Bluetooth, etcetera) to produce digital transmission formatted data 96. The digitaltransmission formatted data 96 will be a digital base-band signal or adigital low IF signal, where the low IF typically will be in thefrequency range of one hundred kilohertz to a few megahertz.

[0033] The digital-to-analog converter 78 converts the digitaltransmission formatted data 96 from the digital domain to the analogdomain. The transmitter section 82 converts the analog baseband or lowIF signal into an outbound RF signal 98 based on a first and/or secondlocal oscillation 81 and/or 83 provided by local oscillation module 74.The transmitter filter module 85, which may be a high frequency bandpassfilter, filters the outbound RF signal 98 and provides the filtered RFsignal to the Tx/Rx switch module 73 for subsequent transmission by theantenna 86 to a targeted device such as a base station, an access pointand/or another wireless communication device.

[0034] The radio 60 also receives an inbound RF signal 88 via theantenna 86, which may have been transmitted by a base station, an accesspoint, or another wireless communication device. The antenna 86 providesthe inbound RF signal 88 to the receiver filter module 71 via the Tx/Rxswitch 73, where the Rx filter 71, which may be a high frequencybandpass filter, filters the inbound RF signal 88. The Rx filter 71provides the filtered RF signal to receiver section 72, which convertsthe amplified inbound RF signal into an inbound low IF signal orbaseband signal based on the first and/or second oscillation 81 and/or83 provided by local oscillation module 74. The receiver section 72provides the inbound low IF signal or baseband signal to the ADC 66.

[0035] The analog-to-digital converter 66 converts the filtered inboundlow IF signal from the analog domain to the digital domain to producedigital reception formatted data 90. The digital receiver processingmodule 64 decodes, descrambles, demaps, and/or demodulates the digitalreception formatted data 90 to recapture inbound data 92 in accordancewith the particular wireless communication standard being implemented byradio 60. The host interface 62 provides the recaptured inbound data 92to the host device 18-32 via the radio interface 54.

[0036] As one of average skill in the art will appreciate, the wirelesscommunication device of FIG. 2 may be implemented using one or moreintegrated circuits. For example, the host device may be implemented onone integrated circuit, the digital receiver processing module 64, thedigital transmitter processing module 76 and memory 75 may beimplemented on a second integrated circuit, and the remaining componentsof the radio 60, less the antenna 86, may be implemented on a thirdintegrated circuit. As an alternate example, the radio 60 may beimplemented on a single integrated circuit. As yet another example, theprocessing module 50 of the host device and the digital receiver andtransmitter processing modules 64 and 76 may be a common processingdevice implemented on a single integrated circuit. Further, the memory52 and memory 75 may be implemented on a single integrated circuitand/or on the same integrated circuit as the common processing modulesof processing module 50 and the digital receiver and transmitterprocessing module 64 and 76.

[0037]FIG. 3 is a schematic block diagram of receiver section 72 thatmay be configured in one of two modes. As shown, the receiver section 72includes a 1^(st) receiver intermediate frequency (IF) stage 100, areceiver switch module 102, and a 2^(nd) receiver IF stage 104. In a1^(st) configuration of the receiver section 72, the receiver section 72receives a 1^(st) inbound RF signal 106 via the 1^(st) receiver IF stage100. The 1^(st) receiver IF stage 100 converts the 1^(st) inbound RFsignal 106 into a 1^(st) inbound IF signal 108 based on the 1^(st) localoscillation 81. For example, if the 1^(st) inbound RF signal 106corresponds to an IEEE802.11 a signal, which has a carrier frequency of5.25 gigahertz, the 1^(st) local oscillation 81 may have a frequency of2.85 gigahertz. Accordingly, the 1^(st) inbound IF signal 108 has acarrier frequency of 2.4 gigahertz (e.g., 5.25 GHz-2.85 GHz). For thisexample, the frequency of the first local oscillation was selected suchthat the resulting 1^(st) inbound IF signal has a carrier frequency of2.4 GHz, which substantially equals the carrier frequency of Bluetoothbased signals and/or IEEE 802.11b signals. Accordingly, for thisexample, the receiver section 72 may be configured to process IEEE802.11a signals or Bluetooth/IEFE 802.11b signals.

[0038] As an alternative example, the 1^(st) local oscillation 81 mayhave a frequency of 4.35 gigahertz such that the 1^(st) inbound IFsignal 108 has a carrier frequency of 900 megahertz. In this example,the receiver section 72 would be configurable to process 1^(st) inboundRF signal 106 that are compliant with IEEE 802.11a, which has a carrierfrequency of 5.25 gigahertz, or configured to process 2^(nd) inbound RFsignals 110 that are compliant with GSM, which has a carrier frequencyof 900 megahertz.

[0039] As yet another alternate example, the 1^(st) local oscillation 81may have a frequency of 1.5 gigahertz and the 1^(st) inbound RF signal106 may have a carrier frequency of 2.4 gigahertz in accordance with802.11b and/or Bluetooth. The resulting 1^(st) inbound IF signal has acarrier frequency of 900 megahertz. According to this example, thereceiver section 72 may be configured to process 1^(st) inbound RFsignals 106 that are compliant with 802.11b and/or Bluetooth orconfigured to process 2^(nd) inbound RF signals 110 that are compliantwith GSM or other standard that utilizes 900 megahertz transmissions.

[0040] Continuing with the 1^(st) configuration of the receiver section72, the receiver switch module 102, which may be a high frequencymultiplexor, switching network, and/or tri-state input bufferingnetwork, couples the 1^(st) inbound IF signal 108 to the 2^(nd) receiverIF stage 104. The 2^(nd) receiver IF stage 104 converts the 1^(st)inbound IF signal 108 into an inbound low IF signal 114 based on the 2local oscillation 83. The inbound low IF signal 114 may have a carrierfrequency in the range from baseband to a few megahertz. Continuing withthe preceding examples, if the 1^(st) inbound RF signal 106 has acarrier frequency of 5.25 gigahertz, the 1^(st) local oscillation 81 hasa frequency of 2.85 gigahertz such that the 1^(st) inbound IF signal hasa carrier frequency of 2.4 gigahertz, the 2^(nd) local oscillation 83may have a frequency of approximately 2.4 gigahertz such that theresulting inbound low IF signal has a zero to a few megahertz carrierfrequency. In the 2^(nd) example, if the 1^(st) inbound RF signal has a5.25 gigahertz carrier frequency and the 1^(st) local oscillation 81 hasa frequency of 4.35 gigahertz such that the 1^(st) inbound IF signal 108has a carrier frequency of 900 megahertz, the 2^(nd) local oscillation83 may have a frequency of approximately 900 megahertz. In the 3^(rd)example, if the 1^(st) inbound RF signal 106 has a carrier frequency of2.4 gigahertz, the 1^(st) local oscillation 81 may have a frequency of1.5 gigahertz such that the 1^(st) inbound IF signal 108 has a carrierfrequency of 900 megahertz and the 2^(nd) local oscillation 83 will havea frequency of 900 megahertz.

[0041] In a 2^(nd) configuration of receiver section 72, the receiver iscoupled to receive the 2^(nd) inbound RF signal 110. In thisconfiguration, the receiver switch module 102 passes the 2^(nd) inboundRF signal 110 to the 2^(nd) receiver IF stage 104. The 2^(nd) receiverIF stage 104 converts the 2^(nd) inbound RF signal 110 into the inboundlow IF signal 114 based on the 2^(nd) local oscillation 83. In thisconfiguration, the 1^(st) receiver IF stage 100 and the 1^(st) localoscillation 81 may be disabled.

[0042] In general, for a dual mode receiver in accordance with thepresent invention, the 2^(nd) inbound RF signal 110 corresponds to themode having the lower carrier frequency, which for the precedingexamples was either 2.4 gigahertz (GHz) or 900 megahertz and the 1^(st)inbound RF signal 106 corresponds to the mode having the higher carrierfrequency, which for the preceding examples was either 5.25 GHz or 2.4GHz.

[0043]FIG. 4 is a schematic block diagram of transmitter section 82 thatcan be configured in one of two modes. The transmitter section 82includes a 1^(st) transmitter IF stage 120, a transmitter switch module124, a 2^(nd) transmitter IF stage 122, and a power amplifier 126. In a1^(st) mode, the transmitter section is operably coupled to convert anoutbound low IF signal 128, which has a carrier frequency in the rangeof baseband to a few megahertz, into an outbound RF signal 136 having aspecified carrier frequency. For example, the outbound RF signal 136 mayhave a carrier frequency of 900 megahertz, 2.4 megahertz, or 5.25megahertz. If the transmitter section 82 is to convert the low IF signal128 into an output RF signal 136 having a 5.25 gigahertz carrierfrequency, the transmitter switch module 124 is configured such that theoutbound low IF signal 128 is up converted by both the 1^(st) and 2^(nd)transmitter IF stages 120 and 122. As one of average skill in the artwill appreciate, the configuration of the transmitter section 82corresponds to the configuration of the receiver section 72. As such, ifthe receiver section is configured to receive 5.25 gigahertz carrierfrequency signals, the transmitter section is configured to output radiofrequency signals having a carrier frequency of 5.25 gigahertz.

[0044] In a 1^(st) configuration of the transmitter section 82, thetransmitter switch module 124, which may be a multiplexer, highfrequency switching network, or tri-state buffering network, providesthe 1^(st) outbound RF signal 130 to the 2^(nd) transmitter IF stage 122and provides the output of the 2^(nd) transmitter IF stage 122 to thepower amplifier 126. In a 2^(nd) configuration of the transmittersection 82, the transmitter switch module 124 bypasses the 2^(nd)transmitter IF stage 122 and passes the 1^(st) outbound RF signal 130 tothe power amplifier 126. Similarly to the receiver section 72, thetransmitter section 82 may have multiple configurations to providemultiple modes of operation.

[0045] As with the examples provided for the receiver section 72, thetransmitter section 82 may have a dual mode of up converting low IFsignals to 900 megahertz and 2.4 gigahertz, to 2.4 gigahertz and 5.25gigahertz, or to 900 megahertz and 5.25 gigahertz. For instance, if thetransmitter section 82 is to up convert the outbound low IF signal 128to 2.4 GHz or to 5.25 GHz, the first local oscillation would be 2.85 GHzand the second local oscillation would be 2.4 GHz. Thus, in the firstmode, the 1^(st) transmitter IF stage 120 up-converts the outbound lowIF signal into the 1^(st) outbound RF signal 130 having a carrierfrequency of 2.4 GHz. The transmitter switching module 124 provides the1^(st) outbound RF signal 130 to the 2^(nd) transmitter IF stage 122.The 2^(nd) transmitter IF stage 122 up-converts the 1^(st) outbound RFsignal 130 to the 2^(nd) outbound RF signal 132 based on the 1^(st)local oscillation 81, which has a frequency of 2.85 GHz. As such, the2^(nd) outbound RF signal 132 has a carrier frequency of 5.35 GHz. Inthe 2^(nd) configuration, the transmitter switch module 124 passes the1^(st) outbound RF signal 130 to the power amplifier 126. In this mode,the resulting outbound RF signal 136 has a carrier frequency of 2.4 GHz.

[0046]FIG. 5 is a schematic block diagram of an alternate receiversection 72. The receiver section 72 includes the 1^(st) IF stage 100,the receiver switch module 102, and the 2^(nd) IF stage 104. The 1^(st)IF stage 100 includes a low noise amplifier 140, 1^(st) and 2^(nd)mixers 142 and 144, and a filter module 146. The 2^(nd) IF stage 104includes 1^(st) and 2^(nd) mixers 150 and 152 and filter module 154. Thereceiver section 72 also includes a low noise amplifier 148.

[0047] In a first mode of the receiver section 72, the 1^(st) IF stage100 receives the 1^(st) inbound IF signal 106 and amplifies it via thelow noise amplifier 140. The low noise amplifier 140 outputs an in-phasecomponent and a quadrature component of the RF signal 106. The in-phasecomponent (I), which may be represented by sin(ω_(RF1)t), is mixed viamixer 142 with an in-phase component of the 1^(st) local oscillation 81,which may be represented by sin(ω_(LO1)t). The 2^(nd) mixer 144 mixesthe quadrature component (Q) of the RF signal, which may be representedby cos(ω_(RF1)t), with the quadrature component of the 1^(st) localoscillation 81, which may be represented by cos(ω_(LO1)t). The resultingmixed signals are then filtered by filter module 146, which may be abandpass filter, to produce the 1^(st) inbound IF signal 108, which maybe represented by sin[(ω_(RF1)−ω_(LO1))t].

[0048] The receiver switch module 102 provides the 1^(st) inbound IFsignal 108 to the 2^(nd) IF stage 104. The 1^(st) mixer 150 of the2^(nd) IF stage 104 mixes the in-phase component, e.g., sin(ω_(RF)t), ofthe 1^(st) inbound IF signal 108 with the in-phase component, e.g.,sin(ω_(LO2)t), of the 2^(nd) local oscillation 83-I to produce a firstmixed signal. Note that, for this mode, ω_(RF) equals ω_(RF1)−ω_(LO1).The 2^(nd) mixer 152 of the 2^(nd) IF stage 104 mixes the quadraturecomponent of the 1^(st) inbound IF signal 108, e.g., cos(ω_(RF)t), withthe in-phase component of the 2^(nd) local oscillation i.e.,cos(ω_(LO2)t), to produce a second mixed signal. The first and secondmixed signals are filtered via filter module 154, which may be abandpass filter, to produce the inbound low IF signal 114, e.g.,sin(ω₀t)=sin[(ω_(RF)−ω_(LO2))t}.

[0049] In a second mode of the receiver section 72, the receiver section72 receives the 2^(nd) inbound RF signal 110, e.g., sin(ω_(RF2)t), viathe low noise amplifier 148. In this mode, the receiver switch module102 passes the output of low noise amplifier 148 to the mixers 150 and152 of the 2^(nd) IF stage 104. The 1^(st) mixer 150 mixes the in-phasecomponent, e.g., sin(ω_(RF)t), of the 2^(nd) inbound RF signal 110 withthe in-phase component, e.g., sin(ω_(LO2)t), of the 2^(nd) localoscillation 83-I to produce a first mixed signal. Note that, for thismode, ω_(RF) equals ω_(RF2). The 2^(nd) mixer 152 mixes the quadraturecomponent of the 2^(nd) inbound RF signal 110, e.g., cos(ω_(RF)t), withthe in-phase component of the 2^(nd) local oscillation i.e.,cos(ω_(LO2)t), to produce a second mixed signal. The first and secondmixed signals are filtered via filter module 154 to produce the inboundlow IF signal 114, e.g., sin(ω₀t)=sin[(ω_(RF)−ω_(LO2))t}.

[0050]FIG. 6 is a schematic block diagram of an alternate transmittersection 82 that includes the 1^(st) IF stage 120, the transmitter switch124, the 2^(nd) IF stage 122 and the power amplifier 126. In thisembodiment, the 1^(st) IF stage 120 includes 1^(st) and 2^(nd) mixers162 and 164, a summation module 166, and a filter module 168. The 2^(nd)IF stage 122 includes 1^(st) and 2^(nd) mixers 172, summation module 174and filter module 176. When the transmitter section 82 is configured toup convert the outbound low IF signal 128 to the higher frequency rangemode of operation, the transmitter switch module 124 couples the outputof the 1^(st) IF stage 120 to the 2^(nd) IF stage 122 such that theoutbound low IF signal 128 is up converted by the 1^(st) and 2^(nd) IFstages 120 and 122. The 1^(st) IF stage 120 up converts the outbound lowIF signal 128 by mixing the in-phase component thereof, e.g., sin(ω₀t),with the in-phase component of the 2^(nd) local oscillation 83, e.g.,sin(ω_(LO2)t) and by mixing the quadrature component thereof, e.g.,cos(ω₀t), with the quadrature component of the 2^(nd) local oscillation83, e.g., cos(ω_(LO2)t). The resulting mixed signals are summed viasummation module 166 and then filtered via filter module 168. The filtermodule 168, which may be a bandpass filter, outputs the 1^(st) outboundRF signal 130, which may be represented by sin[(ω₀+ω_(LO2))t].

[0051] The transmit switch module 124 provides the 1^(st) outbound RFsignal 130 to the 2^(nd) IF stage 122. Mixing module 170 mixes thein-phase component of the 1^(st) outbound RF signal 130, e.g.,sin[(ω₀+ω_(LO2))t], with the in-phase component of the 1^(st) localoscillation 81, e.g., sin(ω_(LO1)t). Mixing module 172 mixes thequadrature component of the 1^(st) outbound RF signal 130, e.g.,cos[(ω₀+ω_(LO2))t], with the quadrature component of the 1^(st) localoscillation 81, e.g., cos(ω_(LO1)t). The resulting mixed signals aresummed via summation module and filtered via filter module 176. Thefilter module 176, which may be a bandpass filter, outputs the 2^(nd)outbound RF signal 132, which may be represented bysin[(ω₀+ω_(LO2)+ω_(LO1))t].

[0052] The transmit switch module 124 then provides the 2^(nd) outboundRF signal 132, as the selected outbound RF signal 134, to poweramplifier 126, which produces the outbound RF signal 136.

[0053] In the alternate configuration, the transmitter section 82 upconverts the outbound low IF signal 128 to the lower of the twofrequency range modes. In this instance, the transmitter switch 124bypasses the 2^(nd) IF stage 122 and provides the 1^(st) outbound RFsignal 130 to the power amplifier 126. The power amplifier 126 thenproduces the outbound RF signal 136 from the 1^(st) outbound RF signal130.

[0054]FIG. 7 is a schematic block diagram of a local oscillation module74 that includes a local oscillation generator 180, 1^(st) oscillationmodule 182 and 2^(nd) oscillation module 184. The local oscillationgenerator 180 produces a reference oscillation 186. The 1^(st)oscillation module 182 manipulates the reference oscillation 186 toproduce the 1^(st) local oscillation 81. The 1^(st) local oscillation 81may be buffered and provided to the receiver section 72 and separatelyto the transmitter section 82. Similarly, the 2^(nd) oscillation module184 manipulates the reference oscillation 186 to produce the 2^(nd)local oscillation 83. The 2^(nd) local oscillation 83 may be bufferedand separately provided to the receiver section 72 and transmittersection 82.

[0055] In one embodiment of the local oscillation module 74, the localoscillation generator 180 is a crystal oscillator that produces areference oscillation 186. The 1^(st) and 2^(nd) oscillation modules 182and 184 may be separate phase locked loops that produce the 1^(st) localoscillation 81 and 2^(nd) local oscillation 83, respectively. Forexample, the crystal generator may generate a clock signal ofapproximately 20 megahertz while the 1^(st) local oscillation 81 may be2.85 gigahertz and the 2^(nd) local oscillation may be 2.4 gigahertz.

[0056] In a 2^(nd) embodiment of the local oscillation module 74, thelocal oscillation generator 180, the 1^(st) oscillation module 182 andthe 2^(nd) oscillation module 184 may each be phase locked loopsproducing their respective oscillations. In a 3^(rd) embodiment of thelocal oscillation module 74, the local oscillation generator 180 may bea phase locked loop that produces a reference oscillation 186 at afrequency similar to the frequency of the 1^(st) local oscillation 81.The 2^(nd) oscillation module 184 may be a phase locked loop orfrequency adjust module to produce the 2^(nd) local oscillation 83 fromthe reference oscillation 186 or from the 1^(st) local oscillation 81.In this example, the 1^(st) oscillation module 182 may be an additionalbuffer, or frequency adjust module.

[0057]FIG. 8 is a schematic block diagram of an alternate embodiment ofreceiver section 72. In this embodiment, the receiver section 72 may beconfigured in one of three modes. For example, the receiver section 72may be configured to receive 3^(rd) inbound RF signals 194, 1^(st)inbound RF signals 106 or 2^(nd) inbound RF signals 110. In one example,the 3^(rd) inbound RF signals 194 have a carrier frequency of 5.25gigahertz, the 1^(st) inbound RF signals 106 have a carrier frequency of2.4 gigahertz and the 2^(nd) inbound RF signals 110 have a carrierfrequency of 900 megahertz.

[0058] When the receiver section 72 is configured to process the 2^(nd)inbound RF signals 110, which for example may have a carrier frequencyof 900 megahertz, the 2^(nd) receiver switch module 192, the 1^(st)receiver IF stage 100 and the 3^(rd) receiver IF stage 190 may bedisabled. Accordingly, the receiver switch module 102 provides the2^(nd) inbound RF signals 110 to the 2^(nd) receiver IF stage 104. The2^(nd) receiver IF stage 104 converts the 2^(nd) inbound RF signals 110into the inbound low IF signals 114 based on the 2^(nd) localoscillation 83. For example, if the 2^(nd) inbound RF signal 110 has acarrier frequency of 900 megahertz, the 2^(nd) local oscillation 83 hasa frequency of 900 megahertz such that the inbound low IF signal 114 hasa carrier frequency of zero to a few megahertz.

[0059] When the receiver section 72 is configured to receive 1^(st)inbound RF signals 106, which may have a carrier frequency of 2.4gigahertz, the 3^(rd) receiver IF stage 190 may be deactivated. In thismode, the 2^(nd) receiver switch module 192 provides the 1^(st) inboundRF signals 106 to the 1^(st) receiver IF stage 100. The 1^(st) receiverIF stage 100 converts the 1^(st) inbound RF signals 106 into 1^(st)inbound IF signals 108 based on the 1^(st) local oscillation 81, whichmay have a frequency of 1.5 gigahertz. The receiver switch module 102passes the 1^(st) inbound IF signals 108 to the 2^(nd) receiver IF stage104. The 2^(nd) receiver IF stage 104 converts the 1^(st) inbound IFsignal 108 into the inbound low IF signal based on the 2^(nd) localoscillation 83, which may have a frequency of 900 megahertz.

[0060] In a 3^(rd) configuration, the receiver section 72 is operablycoupled to receive the 3^(rd) inbound RF signals 194. The 3^(rd)receiver IF stage 190 converts the 3^(rd) inbound RF signals 194 into3^(rd) inbound IF signals 198 based on a 3^(rd) local oscillation 196.The 3^(rd) local oscillation 196 may have a frequency of 2.85 gigahertzwhen the 3^(rd) inbound RF signals 194 have a carrier frequency of 5.25gigahertz. The 2^(nd) switch module 192 provides the 3^(rd) inbound IFsignals 198 to the 1^(st) receiver IF stage 100. The 1^(st) receiver IFstage 100 converts the 3^(rd) inbound IF signals 198 into the 1^(st)inbound IF signals 100 based on the 1^(st) local oscillation 81, whichmay have a frequency of 1.5 gigahertz.

[0061] The receiver switch module 102 provides the 1^(st) inbound IFsignals 108 to the 2^(nd) IF stage 104. The 2^(nd) receiver IF stage 104converts the 1^(st) inbound IF signal 108 into the inbound low IF signal114 based on the 2^(nd) local oscillation 83 which may have a frequencyof 900 megahertz.

[0062]FIG. 9 is a schematic block diagram of another embodiment oftransmitter section 82 that includes the 1^(st) transmitter IF stage120, the 2^(nd) transmitter IF stage 122, the transmitter switch module124, a 2^(nd) transmitter switch module 200, a 3^(rd) transmitter IFstage 202 and the power amplifier 126. As illustrated, the transmittersection 82 may be configured to up convert the outbound low IF signal128 to an output RF signal 136 having a 1^(st), 2^(nd) or 3^(rd) carrierfrequency. For example, the 1^(st) carrier frequency may correspond to900 megahertz, the 2^(nd) carrier frequency to 2.4 gigahertz and the3^(rd) carrier frequency to 5.25 gigahertz.

[0063] When the transmitter section 82 is configured to up convert theoutbound low IF signal 128 to the outbound RF signal 136 having acarrier frequency of 900 megahertz, the 2^(nd) local oscillation 83 hasa frequency of 900 megahertz. Accordingly, the 1^(st) transmitter IFstage 120 up converts the outbound low IF signal 128 to the 1^(st)outbound RF signal 130 having a carrier frequency of 900 megahertz. Thetransmitter switch module 124 and 2^(nd) transmitter switch module 200are configured to pass the 1^(st) outbound RF signal 130 to the poweramplifier 126.

[0064] In a 2^(nd) configuration, the transmitter section 82 may beconfigured to up convert the outbound low IF signal 128 to the outboundRF signal 136 having a carrier frequency of 2.4 gigahertz. In thisconfiguration, the 1^(st) transmitter IF stage 120 produces the 1^(st)outbound RF signal 130 having a carrier frequency of 900 megahertz.Transmitter switch module 124 provides the 1^(st) outbound RF signal 130to the 2^(nd) transmitter IF stage 122. The 2^(nd) transmitter IF stage122 up converts the 1^(st) outbound RF signal 130 to the 2^(nd) outboundRF signal 132 having a carrier frequency of 2.4 gigahertz based on the1^(st) local oscillation 81 having a frequency of 1.5 gigahertz. The2^(nd) transmitter switch module 200 is configured to pass the 2^(nd)outbound RF signal 132 to the power amplifier.

[0065] In the 3^(rd) configuration, where the transmitter section 82 isconfigured to convert the outbound low IF signal 128 into the outboundRF signal 136 having a carrier frequency of 5.25 gigahertz, the 1^(st)transmitter IF stage 120, transmitter switch 124 and 2^(nd) transmitterIF stage 122 are active to produce the 2^(nd) outbound RF signal 132having a carrier frequency of 2.4 gigahertz.

[0066] The 2^(nd) transmitter switch module 200, in this configuration,provides the 2^(nd) outbound RF signal 132 to the 3^(rd) transmitter IFstage 202. The 3^(rd) transmitter IF stage 202 up converts the 2^(nd)outbound RF signal 132 based on the 3^(rd) local oscillation 204, whichmay have a frequency of 2.85 gigahertz, to produce the 3^(rd) outboundRF signal 206. The 2^(nd) transmitter switch module 200 provides the3^(rd) outbound RF signal 206 to the power amplifier 126, which outputsthe outbound RF signal 136 having a carrier frequency of 5.25 gigahertz.

[0067] The preceding discussion has presented a wide bandwidthtransceiver that is capable of supporting multiple wirelesscommunication standards. As one of average skill in the art willappreciate, other embodiments may be derived from the teaching of thepresent invention, without deviating from the scope of the claims.

What is claimed is:
 1. A wide bandwidth transceiver comprises: receiversection that includes: first receiver intermediate frequency (IF) stageoperably coupled to convert a first inbound radio frequency (RF) signalinto a first inbound IF signal based on a first local oscillation;receiver switching module operably coupled to pass one of the firstinbound IF signal and a second inbound RF signal to produce a selectedinbound signal, wherein frequency of the second inbound RF signal issubstantially equal to the first inbound IF signal and wherein thefrequency of the second inbound RF signal is less than frequency of thefirst inbound RF signal; and second receiver IF stage operably coupledto convert the selected inbound signal into an inbound low IF signalbased on a second location oscillation; transmitter section thatincludes: first transmitter IF stage operably coupled to convert anoutbound low IF signal into a first outbound RF signal based on thesecond local oscillation; second transmitter IF stage, when operablycoupled, converts the first outbound RF signal into a second outbound RFsignal based on the first location oscillation; power amplifier operablycoupled to amplifier a selected outbound RF signal; and transmitterswitching module operably coupled to provide one of the first outboundRF signal and the second outbound RF signal to the power amplifier asthe selected outbound RF signal; local oscillation module operablycoupled to produce the first and second local oscillations.
 2. The widebandwidth transceiver of claim 1, wherein the first receiver IF stagefurther comprises: first mixer operably coupled to mix an in-phasecomponent of the first inbound RF signal with an in-phase component ofthe first local oscillation to produce an in-phase mixed signal; secondmixer operably coupled to mix a quadrature component of the firstinbound RF signal with a quadrature component of the first localoscillation to produce a quadrature mixed signal; and filter moduleoperably coupled to filter the in-phase mixed signal and the quadraturemixed signal to produce the first inbound IF signal.
 3. The widebandwidth transceiver of claim 1, wherein the receiver switching modulefurther comprises at least one of: a multiplexer; switch network; andtri-state input buffer network.
 4. The wide bandwidth transceiver ofclaim 1, wherein the second receiver IF stage further comprises: firstmixer operably coupled to mix an in-phase component of the selectedinbound signal with an in-phase component of the second localoscillation to produce an in-phase mixed signal; second mixer operablycoupled to mix a quadrature component of the selected inbound signalwith a quadrature component of the second local oscillation to produce aquadrature mixed signal; and filter module operably coupled to filterthe in-phase mixed signal and the quadrature mixed signal to produce theinbound low IF signal.
 5. The wide bandwidth transceiver of claim 1,wherein the first transmitter IF stage further comprises: first mixeroperably coupled to mix an in-phase component of the outbound low IFsignal with an in-phase component of the second local oscillation toproduce an in-phase mixed signal; second mixer operably coupled to mix aquadrature component of the outbound low IF signal with a quadraturecomponent of the second local oscillation to produce a quadrature mixedsignal; summing module operably coupled to sum the in-phase mixed signaland the quadrature mixed signal to produce a summed signal; and filtermodule operably coupled to filter the summed signal to produce the firstoutbound RF signal.
 6. The wide bandwidth transceiver of claim 1,wherein the second transmitter IF stage further comprises: first mixeroperably coupled to mix an in-phase component of the first outbound RFsignal with an in-phase component of the first local oscillation toproduce an in-phase mixed signal; second mixer operably coupled to mix aquadrature component of the first outbound RF signal with a quadraturecomponent of the first local oscillation to produce a quadrature mixedsignal; summing module operably coupled to sum the in-phase mixed signaland the quadrature mixed signal to produce a summed signal; and filtermodule operably coupled to filter the summed signal to produce thesecond outbound RF signal.
 7. The wide bandwidth transceiver of claim 1,wherein the transmitter switching module further comprises at least oneof: a multiplexer; switch network; and tri-state input buffer network.8. The wide bandwidth transceiver of claim 1, wherein the locationoscillation module further comprises: a local oscillation generatoroperably coupled to produce a reference oscillation; first oscillationmodule operably coupled to produce the first local oscillation from thereference oscillation; and second oscillation module operably coupled toproduce the second local oscillation from the reference oscillation. 9.The wide bandwidth transceiver of claim 1 further comprises: controlmodule operably coupled to enable the receiver switch module to pass thefirst inbound IF signal or the second inbound IF signal and to enablethe transmitter switch to provide the first outbound RF signal or thesecond outbound RF signal.
 10. The wide bandwidth transceiver of claim1, wherein the receiver section further comprises: first low noiseamplifier operably coupled to receive the first inbound RF signal andoperably coupled to the first receiver IF stage; and second low noiseamplifier operably coupled to the receive the second inbound RF signaland operably coupled to the receiver switch module.
 11. The widebandwidth transceiver of claim 1 further comprises: the receiver sectionincluding: third receiver IF stage operably coupled to convert a thirdinbound radio frequency (RF) signal into a third inbound IF signal basedon a third local oscillation; and second receiver switching moduleoperably coupled to pass one of the first inbound RF signal and a thirdinbound RF signal to first IF stage as the first inbound RF signal,wherein frequency of the third inbound RF signal is substantially equalto the first inbound RF signal; the transmitter section including: thirdtransmitter IF stage, when operably coupled, converts the secondoutbound RF signal into a third outbound RF signal based on a thirdlocation oscillation; and the transmitter switching module operablycoupled to provide one of the first outbound RF signal, the secondoutbound RF signal, and the third outbound RF signal to the poweramplifier as the selected outbound RF signal.
 12. A wide bandwidthreceiver comprises: first receiver intermediate frequency (IF) stageoperably coupled to convert a first inbound radio frequency (RF) signalinto a first inbound IF signal based on a first local oscillation;receiver switching module operably coupled to pass one of the firstinbound IF signal and a second inbound RF signal to produce a selectedinbound signal, wherein frequency of the second inbound RF signal issubstantially equal to the first inbound IF signal and wherein thefrequency of the second inbound RF signal is less than frequency of thefirst inbound RF signal; second receiver IF stage operably coupled toconvert the selected inbound signal into an inbound low IF signal basedon a second location oscillation and location oscillation moduleoperably coupled to produce the first and second local oscillations. 13.The wide bandwidth receiver of claim 12, wherein the first receiver IFstage further comprises: first mixer operably coupled to mix an in-phasecomponent of the first inbound RF signal with an in-phase component ofthe first local oscillation to produce an in-phase mixed signal; secondmixer operably coupled to mix a quadrature component of the firstinbound RF signal with a quadrature component of the first localoscillation to produce a quadrature mixed signal; and filter moduleoperably coupled to filter the in-phase mixed signal and the quadraturemixed signal to produce the first inbound IF signal.
 14. The widebandwidth receiver of claim 1, wherein the receiver switching modulefurther comprises at least one of: a multiplexer; switch network; andtri-state input buffer network.
 15. The wide bandwidth receiver of claim12, wherein the second receiver IF stage further comprises: first mixeroperably coupled to mix an in-phase component of the selected inboundsignal with an in-phase component of the second local oscillation toproduce an in-phase mixed signal; second mixer operably coupled to mix aquadrature component of the selected inbound signal with a quadraturecomponent of the second local oscillation to produce a quadrature mixedsignal; and filter module operably coupled to filter the in-phase mixedsignal and the quadrature mixed signal to produce the inbound low IFsignal.
 16. The wide bandwidth receiver of claim 12, wherein thelocation oscillation module further comprises: a local oscillationgenerator operably coupled to produce a reference oscillation; firstoscillation module operably coupled to produce the first localoscillation from the reference oscillation; and second oscillationmodule operably coupled to produce the second local oscillation from thereference oscillation.
 17. The wide bandwidth receiver of claim 12further comprises: control module operably coupled to enable thereceiver switch module to pass the first inbound IF signal or the secondinbound IF signal.
 18. The wide bandwidth receiver of claim 12 furthercomprises: first low noise amplifier operably coupled to receive thefirst inbound RF signal and operably coupled to the first receiver IFstage; and second low noise amplifier operably coupled to the receivethe second inbound RF signal and operably coupled to the receiver switchmodule.
 19. The wide bandwidth receiver of claim 12 further comprises:third receiver IF stage operably coupled to convert a third inboundradio frequency (RF) signal into a third inbound IF signal based on athird local oscillation; and second receiver switching module operablycoupled to pass one of the first inbound RF signal and a third inboundRF signal to first IF stage as the first inbound RF signal, whereinfrequency of the third inbound RF signal is substantially equal to thefirst inbound RF signal.
 20. A wide bandwidth transmitter comprises:first transmitter IF stage operably coupled to convert an outbound lowIF signal into a first outbound RF signal based on the second localoscillation; second transmitter IF stage, when operably coupled,converts the first outbound RF signal into a second outbound RF signalbased on the first location oscillation; power amplifier operablycoupled to amplifier a selected outbound RF signal; transmitterswitching module operably coupled to provide one of the first outboundRF signal and the second outbound RF signal to the power amplifier asthe selected outbound RF signal; and location oscillation moduleoperably coupled to produce the first and second local oscillations. 21.The wide bandwidth transmitter of claim 20, wherein the firsttransmitter IF stage further comprises: first mixer operably coupled tomix an in-phase component of the outbound low IF signal with an in-phasecomponent of the second local oscillation to produce an in-phase mixedsignal; second mixer operably coupled to mix a quadrature component ofthe outbound low IF signal with a quadrature component of the secondlocal oscillation to produce a quadrature mixed signal; summing moduleoperably coupled to sum the in-phase mixed signal and the quadraturemixed signal to produce a summed signal; and filter module operablycoupled to filter the summed signal to produce the first outbound RFsignal.
 22. The wide bandwidth transmitter of claim 20, wherein thesecond transmitter IF stage further comprises: first mixer operablycoupled to mix an in-phase component of the first outbound RF signalwith an in-phase component of the first local oscillation to produce anin-phase mixed signal; second mixer operably coupled to mix a quadraturecomponent of the first outbound RF signal with a quadrature component ofthe first local oscillation to produce a quadrature mixed signal;summing module operably coupled to sum the in-phase mixed signal and thequadrature mixed signal to produce a summed signal; and filter moduleoperably coupled to filter the summed signal to produce the secondoutbound RF signal.
 23. The wide bandwidth transmitter of claim 20,wherein the transmitter switching module further comprises at least oneof: a multiplexer; switch network; and tri-state input buffer network.24. The wide bandwidth transmitter of claim 20, wherein the locationoscillation module further comprises: a local oscillation generatoroperably coupled to produce a reference oscillation; first oscillationmodule operably coupled to produce the first local oscillation from thereference oscillation; and second oscillation module operably coupled toproduce the second local oscillation from the reference oscillation. 25.The wide bandwidth transmitter of claim 1 further comprises: controlmodule operably coupled to enable the transmitter switch to provide thefirst outbound RF signal or the second outbound RF signal.
 26. The widebandwidth transmitter of claim 20 further comprises: third transmitterIF stage, when operably coupled, converts the second outbound RF signalinto a third outbound RF signal based on a third location oscillation;and the transmitter switching module operably coupled to provide one ofthe first outbound RF signal, the second outbound RF signal, and thethird outbound RF signal to the power amplifier as the selected outboundRF signal.